Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Electrochemical energy storage device

An energy storage device, electrochemical technology, applied in the direction of circuits, electrical components, battery components, etc., can solve the problems of electrode tab manufacturing and processing difficulties, manufacturing efficiency reduction, manufacturing and processing difficulties, etc., to increase the cross-sectional area of ​​tabs , reduce internal resistance, uniform current density

Active Publication Date: 2019-01-22
JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the increase in the number of electrode tabs will cause difficulties in the manufacture and processing of electrode tabs, such as reduced manufacturing efficiency and increased cost of cutting dies; and difficulties in manufacturing and processing when welding electrode tab groups, welding virtual welding, over-welding

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electrochemical energy storage device
  • Electrochemical energy storage device
  • Electrochemical energy storage device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0059] The electrochemical energy storage device according to the present invention will be described in detail below with reference to the accompanying drawings.

[0060] refer to Figure 1 to Figure 21 , according to the electrochemical energy storage device of the present invention comprises: outer packing case 1 (referring to Figure 10 and Figure 18 ), with an opening (not shown); top cover 2 (refer to Figure 8-9 as well as Figure 19-20 ), is provided with a first electrode lead-out terminal 21 and a second electrode lead-out terminal 22 (refer to Figure 9 as well as Figure 20 ) and used to seal the opening of the outer packaging shell 1 (refer to Figure 10 and Figure 18 ); cell 3; and electrolyte (not shown), which is injected into the cavity formed by the outer casing 1 and the top cover 2 and impregnates the cell 3 . The electric core 3 is placed in the cavity formed by the outer packaging shell 1 and the top cover 2 (refer to Figure 11 and Figure 21 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides an electrochemical energy storage device, which includes: an outer packaging case, a top cover provided with a first electrode lead terminal and a second electrode lead terminal, an electric core, and an electrolyte. The battery core includes: a first electrode pole piece, including a first electrode collector; a plurality of first electrode tabs, each disposed on the first electrode collector; a second electrode pole piece, including a second electrode collector; Two electrode tabs are respectively arranged on the second electrode current collector; and an isolation film. The first electrode pole piece, the separator and the second electrode pole piece are sequentially wound to form a battery core. A plurality of first electrode tabs are overlapped to form at least one set of first electrode tab groups, and a plurality of second electrode tabs are overlapped to form at least one set of second electrode tab groups; the first electrode tab group and the second electrode tab group The groups are all U-shaped; the U-shaped first electrode tab group is bent and electrically connected to the first electrode lead-out terminal on the top cover, and the U-shaped second electrode tab group is bent and connected to the top cover. The second electrode lead-out terminals are electrically connected.

Description

technical field [0001] The invention relates to the field of energy storage devices, in particular to an electrochemical energy storage device. Background technique [0002] EV batteries require a large charge-discharge rate to meet the requirements of fast charging to save charging time; and to meet the requirements of fast discharge to improve the power of the car. The fast charge and fast discharge function of the battery requires the internal resistance of the battery to be small and the current density of the battery to be uniform, otherwise it will cause local overheating of the battery and pose a safety hazard. In the battery industry, the internal resistance of the battery is usually reduced by increasing the number of electrode tabs to increase the cross-sectional area of ​​the electrode tab group. However, the increase in the number of electrode tabs will cause difficulties in the manufacture and processing of the electrode tabs, such as reduced manufacturing effi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/26H01M10/04H01M50/54
CPCY02E60/10Y02P70/50
Inventor 郭彬彬阳超
Owner JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com